First report of Pestalotiopsis sydowiana causing leaf necrosis of Myrica rubra in China.
In April 2011, a survey was conducted to identify the causal agents of leaf necrosis of red bayberry (cv. Biqi) in Cixi City, Zhejiang Province. The morphological characteristics of the isolate matched those of Pestalotiopsis sydowiana. Koch's postulates were confirmed with 20 healthy leaves of the same size on 3 branches of 3 plants in the field. The fungus was consistently reisolated from the lesions of inoculated plants. The identity of the fungus was confirmed nucleotide blast analysis of the 5.8S subunit and flanking internal transcribed spacers (ITS1 and ITS2) of rDNA regions (GenBank Accession No. JQ322999), which revealed 100% similarity whith those other P. sydowiana isolates (e.g, GenBank Accession No. FJ478105). This is thought to be the first report of P. sydowianacausing leaf necrosis of Myrica rubra in China.